Cash-register.



H. A. MARTlN.

Patented Oct. 31, 1916.

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CASH REGISTER.

APPLICATION FILED MAR. II. 1913.

1.202.867. Patented Oct. 31,1916.

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H. A. MARTIN.

CASH REGISTER.

APPLICATION FILED MAR. 11. 1913.

1 202,867. Patented Oct, 31, 1916.

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awn/Mm Jzaa/Fon AJfarzin 4m 82mm W 7 UNITED STATES PATENT orrroa.

HAAKON A. MARTIN, OF DAYTON, OHIO, ASSIGNOR TO THE NATIONAL CASH REGISTER COMPANY, OF DAYTON, OHIO, ACORPORATION OF OHIO, (INCORPORATED IN 1906.)

CASH-REGISTER.

Specification of Letters Patent.

Patented Oct; 31, 1916.

Application filed March 17,1913. Serial No. 754,862.

accounting mechanisms such as cash registers, and'has more particular relation to a mechanism for diflerentially setting the actuating members of the accounting device.

The principal object of the invention is to .15 provide novel means for positioning the actuating members of the accounting device, whereby the amount of each successive transaction can be added to the previous total of preceding. transactions.

Another object of this invention is to provide a manipulative means whereby a detent plate may be moved in either direction, and the depressedkey thereby released.

A. further object is to provide a mechanism which is effective upon the operation of the machine whereby a detent plate can be moved in either direction and thereby release thekeys which have been operated.

" Vith theseand incidental objects in View,

the invention consists in certain novel features of construction and combinations of parts, the essential elements of which are set forth in appended claims, and a preferred form of embodiment of which is hereinafter described with reference to the drawings .which accompany and form part of the specification.

Of said drawings: Figure l is a transverse sectional view of the machine embodying the present invention. Fig. 2 is a detail of a cam employed to rock the totalizer into engagement with its actuating rack. Fig. 3 is a detail of a cam employed to restore the transfer mechanism to normal position. Fig. 4 is a detail section taken along a bank of keys and showing the transfer mechanism. Fig. 5 is an enlarged detail of the transfer pawls. Fig. 6 is a detail of a cam employed to actuate the key releasing arm. Fig. 7 is a. detail section taken through a bank of keys showing the mechanism for differentially positioning the actuating rack of the totalizer. Figs. 8 and 9 are details of the cams employed to rock certain actuating jaws and to close the jaws respectively. .Fig.

10 is a detailedfront view of the lower portions of the determining members showing the rollers which are adapted to be gripped by the operating jaws.

This invention has more particularly to do with a novel differential mechanism whereby movement of a main operating device, constant in extent, may give a differential movement to the actuating devices for the totalizer and indicating mechanisms.

The differential movement is determined by differentially moving an element connected to the membercarrying the actuating rack for the totalizer in the path of jaws moved by the main operating mechanism.

In particular the invention provides for two irregularly shaped members for each bank of keys. The upper amount keys in the bank engage one of these members and thereby rock the member differentially about a pivotal point. The keys in the lowerportion of the bank engage in a like manner with the other member. One of the members carries a pin which operates in a slot in a link. This link is secured to an arm by a pin and this arm has a fixed pivot, while the pin "also serves as a pivotal center for the other member. When a key is depressed a pair of jaws grip a roller on the member which has been moved, and when the jaws are given a movement by the main operating mechanism, the element carrying an actuating rack is moved differentially. When the rack has been given this differential setting, the totalizer is rocked into engagement with it, and as the rack is restored to its normal position the amount of the transaction registered is added on the totalizer. Each bank of keys is provided with a detent which is moved upward if a lower amount key is depressed, and in the opposite direction when an upper amount key is depressed. An upper and a lower key cannot therefore be depressed at the same time. A release key is also provided which, when it is depressed, gives the detent a further movement in the direction in which it is already moved whereby the depressed key is released. At the end of the operation of the machine a device controlled by the main operating mechanism releases the keys automatically by raising or lowering the detent plate.

Referring to the drawings, 1 to 9 are the amount keys, and 10 is the release key. The numbers 1 to 9, designating these keys, will be taken for the sake of illustration, as also representing the value of the respectively designated keys. A detent plate 11 is slidably mounted on the frame of the machine by pins 13 fast to the frame, engaging in tive inclincd'face of its respective recess in the detent plate '11 whereby, because of the construction of the inclined face, the detent plate 11 is raised. The detent plate 11 is held in its normal position when the keys are released,,by pawls l9 and 20 (Fig. 4). These pawls are loosely mounted on a rod 22 and each engages a pin 23"projecting from the detent plate 11. "Extending rearwardly from each of these pawls is a curved arm 24, which is normally in contact with a fixed pin 25 extending from the frame of the machine. A spring 26, which is constantly under tension, connects the rearends of these rear arms of the pawls 19 and 20. hen the detent plate 11 is in its normal position both of these pawls engage the pin. \Vhenthe 'detent plate is moved down and the depressed key is released the-pawl 20 brings the 'detent plate again into its 'normal position, but when it is raised and the depressed key then released, the other pawl brings the detent plate 11 back to its normal position. A manipulative device is provided, whereby the amount key, which has been operated, can be released. The detent plate has a projection 27 with two beveled faces. A pin 28 projects from the release key 10. \V-hen the detent plate 11 is lowered, as has been explained, if the release key 10 is depressed thepin 28 will engage the upper beveled face of this projection 27 giving the detent plate 11 a slightly further downward movement, whereby the depressed amount key is released. The detent plate is then returned to its normal position by the pawl 20. When the detent plate is raised the roller 28 engages the lower beveled face of this projection 27 and in the same manner detent plate 11 is restored to its normal position. A means is also pr0- vided whereby the amount keys are released upon the operation of the machine. An arm 31 is loosely mounted upon a shaft 29 and carries at its upper end a projection which has two beveled faces. Extending downwardly from this arm is another arm 32 to which at its lower end is secured a pitman 33. This pitman at its rear end is forked and straddles a main drive shaft 34, and also carries a roller 35 which engages in the race of a disk 36 (Fig. 6). The detent plate 11 at its lower end has a projection 30 with beveled faces. The race of the disk 36 so constructed that toward the very end of each operation of the machine the pitman isgiven a slight rearward movement, whereby the arm 31 is oscillated in'a. clockwise direction. l Vhen the detent plate 11 has been moved down by one of the upper amount keys and the machine has-been operated, -the lower beveled face ofthe projection on the arm 31 engages the upper beveled face "of the projection '30 on the detent 11 "whereby the detent is given a slightly further downward movement and thekey which has been pressed is released.

When the detent plate has' been rai's'edtli'e upper beveled fa'ce'of the projection of the arm 31 engages with the lower beveled face oft'heprojection 3015f the 'detent and the 'depres'se'd'key is released, as in the other operation. g 7

One of 'thenov'el features of the machine is a means for d'iflferentially positioning a membencarrying an actuating rack, where- "by the totalizer 'is to be actuated. An irregularly shaped member 37 (Fig. 7), is pivot- "ed at its upper end to a link '39 by a pin 41 extending from the arm engaging in a slot 42 in'th'e link. Another irregularly formed member 38 is pivoted to the lower end of thisli'nk 39 by apin 45; -This link is pivot- 'edto anal-r1146 by the same pin 45. The

arm 46' is rigidly secured to an arm 47, which in turn, is loosely mounted on a shaft 48. At its inner end the arm is secured to a link 49, the other end of the link being pivoted to a plate 52 which is capable of being given a reciprocating movement through the pins 43 carried by the machine frame extending through slots 44 in the plate. The members 37 and 38 are held in normal position by the springs 37 and 38 respectively and at'their lower ends each member is provided with a roller 53 (Fig. 10). The member 37 is so constructed that when any of the first four amount keys in the corre spondin'g bank is depressed the roller on the key engages with this member and rocks it about its pivot 41-. The extent of movement is determined by the value of the amount key, and is inversely proportional to the value represented by the key. For example, if the key 'represent'in'gone cent is depressed the member 37 is given four units of movement about its pivot 41 whereas if the key representing four cents is operated the member 37 is given but one unit of movement. The other member 38 is rocked about its pivot 45 by the five lower amount keys ineach bank, and its movement is also determined by the value of each of these keys. The key in this series which represents the least value gives the member 38 the greatest "extent of movement, namely the depressed key in eitherscries of each bank of keys.

The members 37 and 38 just described are given a translatory movement through a pair of jaws, which in turn are rocked about their pivotal centers by the main operating mechanism. One jaw 55 is pivoted to the other jaw 58 by a pin 59, while the jaw 58 .isrigidly mountedupon a shaft 61. The jaw 55 carries a plate 54:, the inner edge of which has four notches, and the lower jaw 58' has a corresponding plate 56. These plates are so constructed that when the member 37 is rocked about its pivot and the jaws are-then closed, they grip the roller 53 on the end of the member in its set position. If the 1 key has been depressed, this roller will be in a position where the first notches from the pivot pin 59 of the jaws will grip it. If the 4; .key has been depressed the roller will beheld in the outside notches. The jaw 55 is also provided with a plate 57 which is parallel to the plate 54. This plate 54 at its lower edge has-five notches and the lower jaw has a corresponding plate with five notches. Theseplates are so constructed .as'to grip the roller 53*on the arm 38 whenait has been rocked about its pivot by any one of thefivelower keys in the bank. These jaws areoperated by the main operatin mechanism. The jaw 55 at its lower end ias an arm 50 with a cam face 610. A roller or pin 62, which projects from an arm 63 mounted on a hub of a shaft 64, engages with this cam face 610, (Fig. 6). Fast to this same hub is an arm 65 to which is pivoted a pitman 66, (Fig.1). The pit-man at its rear end is bifurcated and straddles the shaft 34 and near the same end carries a projecting roller 67 which engages in the cam groove of a disk 68, (Fig. 9). This cam groove is so constructed that at the very beginning of the operation of the machine the pitman 66 is given a rearward movement whereby the arm 63 is rocked in a counterclockwise direction. This movement of the arm, through the engagement of the roller 62 with the cam face 610 lowers the jaw 55 thereby gripping one of the rollers 53. The jaws in their closed position are then given an oscillatory movement by the following described mechanism.

Fast on the shaft 61 is an arm 69, which at its outer end, is pinned to a pitman 71, which at its rear end is slotted and straddles the drive shaft 342 and also carries a roller 72 which engages in the cam groove of a disk 73 (Fig. 8). This cam groove is so designed that whenthe disk begins to rotate the pitman 71 is given a short rearward movement, whereby the lower jaw 58 is raised slightly and hence brought into contact with one of the rollers 53. Upon further rotation of the disk the pitman 71 is given a further rearward movement, which, as can be readily seen, will rock the aws in their closed condition about the pivot 64, the extent of movement being, of course, always the same. Because these jaws grip one of the rollers 53 the member to which the roller gripped is secured, is moved in the direction of its length The extent of movement of either arm 37 or 38 depends upon the differential setting of its respective rollers 53., .If the roller53 is near the ivotal point59 of the jaws the members 3 or 38 will not be given as great an extent of movement as if the roller was near the outer end of the jaws. In other words the extent of translatory movement of these members ,is now key is operated the member 38 will-first be given one unit of movement about its pivotal center and then five units of movement in-the direction of its length. \Vhen any of the first four amount keys in each bank of keys is pressed, the arm 37 as has been said, will be raised by the rocking of the jaws. This arm however, is raised a distance equal-to the length of the slot 42 before the link 39 is raised. .When the .roller on the member 38 is gripped by the jaws and the member 38 moved upward, the plate 52 is moved a corresponding distance. This idle movement of the member 37 is provided because the member 38 moves the plate 52 differentially from five to nine spaces without any idle movement. must then he traveled over by the member 37 before the plate is moved in order that the member 37 may differentially move the plate from one to four spaces.

By the construction just explained, a movement of one to nine steps can be given to this plate 52 by the same extent of move ment being given each time to the jaws 55 and 58. This construction rather than one employing but one irregular member to be differentially positioned, has been used as it can readily be seen that it is preferable to provide shorter jaws and at the same time obtain the desired extent of movement of the plate 52. By the devices which have been clearly described, plate 52 is differentially moved by the rocking of the jaws which grip the determining members 37 or 38 after A distance equal to five units they have been differentially positioned under the operation of the amount keys.

The totalizer and its actuating device may be next described. Each plate 52 carries an actuating rack 75, provided with teeth 74 which add the amount of the transaction upon the totalizer 78 when the totalizer has been rocked into mesh with the actuating rack, as the rack is being restored to its normal position. The totali'zer elements are rocked into engagement with the rack '75 at the proper time by the following described device. The totalizer elements are loosely mounted on a shaft 79, which is carried by an arm 81 loose on a shaft 82. This arm has a curved slot into which projects a pin 83 fast on an arm 84 which is rigidly mounted on a sleeve surrounding a shaft 70. Fast to this same sleeve is an arm 85 which at its rear end is secured to a pitman 86. rear end of the pitman straddles the main drive shaft 34 and has a roller 89 engaging in the race 88 of the box cam 87 as shown in Fig. 2. This race is so constructed as to rock the arm 81 downward and thereby rock the totali'zer into engagement with the actuating racks 75 when these actuating racks have been differentially positioned. Now when these racks are given their return movement to normal position the amount of the transaction registered will be added on the totalizer.

The transfer-mechanism for the totalizer is shown in Fig. 4. Arms 91 are pivoted to the plate 52 by the pins 93. Connecting the other ends of these arms is a link 94. The upper arm 91 is normally held in engagement with a pin 95 fast on the plate 52 by a spring 96, which is constantly under tension and extends from the plate 52 to the arm 91. The rack 75 carries a lug 106, and the plate 52 carries a lug 108. A rod 107 is fast to the lug 106 and engages in aslot in the lug 108. A spring surrounds this rod 107 and being continually under a tension tends to lower the rack 75, the rack 75 being slidably mounted upon the plate 52 by the pins 76, projecting from the plate 52, engaging in the slots 77 in the rack. The rack 75 has an extension 104 in which is a recess 103. In this recess a projection 102 on one arm of a bell crank 99, pivoted to the plate 52 by the pin 101, engages. The other arm of this bell crank carries a roller 98 which is in engagement with an inclined face of the projection 97 of the link 94. The transfer tripping pawls are shown in Fig. 5. These pawls are mounted on a hub 111 surrounding the shaft 100. This hub has a small opening into which the end of a spring 119 engages. The pawl has a projecting rod 110 which is held in contact with the link 94 adjacent to the totalizer element of the next higher denomination by the spring 119. Each't'otalizer element carries a projection The or pin 112 which, when a transfer is to be accomplished, engages the pawl 109 whereby it and the pawl 110 are rocked. The rocking of these pawls forces the projection 102 of the bell crank out of engagement with the.

recess 103 in the projection in the rack 75 by the engagement of the inclined face of the projection 97 on the link 94 with the roller 98 on the other arm of the bell crank 99. When this disengagement is accomplished the rack 75 is given an additional movement of one unit by the spring surrounding the rod 107 ,whereby the totalize'r element is moved one step.

At the very end of theoperation of the machine this rack is restored to its normal position. The rack at its lower end and on the same side as is the teeth has a projection 118 with which a projection 117 o'n'a'n arm 116 fast to the shaft 118" may engage. A downwardly projecting arm 116 is rigidly mounted on the shaft 118 and has secured at its lower end a pitman which at its rear end straddles the drive shaft 34. This pitman 115 carries a roller 114 which engages in 5 the cam groove of the box'cam 113 (Fig. 3). This cam isso constructed that at the very end of the operation of the machine the pit- 'man 115 is given a short forward movement, whereby the 'bell crank '116 is rocked about its pivot and the'projection on the arm 117 engages with the projection 118 thereby moving the rack 75 upward. The projection 102 on the one arm of the bell crank 99 then engages the recess 103 in the projection "on the rack 7 5; because the inclined face of the projection 97 on the rack 75 "has been taken out of engagement with the roller 98 and the spring 105 brings this projection 1'02 into engagement with the recess 103 as soon as the recess presents itself. The transfer opcration'the'refore is as follows: Upon the operation of the machine the plate 52 is raised and when the plate is returned from its set position to its normal position the amount of the transaction is added on the totalizer 7 8, the totali'zer being rocked into engagement with the rack 75 during this return movement of the plate 52. When a transfer is to be accomplished the transfer pawl's'are moved as explained. The projection 102 on the one arm of the bell crank '99 is taken out of engagement with the recess 103 inthe projection 104 on the rack 75 and the rack is given one unit of movement under spring action. Toward the very end of the operation of the machine the bell crank 116 is rocked in a counter-clockwise direction whereby the rack 75 is returned to its nornial position and the projection 102 of the bell crank 99 again engages the recess 103 in the rack and holds it in normal position 1111 til the next operation of the machine.

The indicator mechanism is shown in Fig. 1. The members which determine the dif fer'ential movements of the actuating racks for the indicators are connected to the differentially positioned plates 52. Further operation of the machine then actuates segmental racks, which gear with the pinions sepositioned plate 52 engages. When the plate 52is moved, as has been explained, the engagement of the roller with the slot 130 of the forked arm differentially positions this niemb erfj Alining p'awls 132 are'provided to engage in the notches of this segment 126 to hold it in position, while the actuating'racks 1442 give the indicators a rotary motion. These pawls 132 are loosely pivoted on a rod 133 and are in constant contact with short arms 125, rigidly mounted on a shaft 120. Fast tothis same shaft is a rearwardly extending arm' 134 which at its outer end, is secured to link 135, the lower end of this link being" fastened to one of the arms 136 of a bell f'c'rankloosely mounted on a shaft 136. To the'outer end of the other arm 137 of this bell crank is secured a pitman 138' which consists fof a slotted plate straddling the'shaft'34; At the forward end of this pitman is a'i'oller 139 engaging inthe cam groove of adisk 141, shown in full lines in Fig. 1. When the plate 52 is being differentially positioned the member 126 is dif- I ferentially rocked about its pivotal point 124. The pitman 138 is then given a backward movement because of the construction of the cam groove in the disk 141 and the short arms 125- are rocked about the shaft 120'in a counter-clockwise direction thereby bringing a projection on the arm 132 into engagement with one of the notches of the segments 126. Each segment is held in this position until after the indicators 144 havebeen differentially set up. The actuating member for the indicator consists of asegmental rack 142 carrying teeth which engage with a pinion 143 rigidly secured to the indicator elements and at its lower end carries a pear shaped projection 146 with a pear shaped slot 146. v This actuating member is loosely, pivoted upon the shaft 124. A roller 147 operates in an elongated slot 128 in the segment 126, and also in the pear shaped slot 146? of the pear shaped projection 146.-

This roller 147 extends from the upper end of a link 148, the lower end of which is secured to the arm 149 of a bell crank. The lower arm 151 of this bell crank is secured to a short pitman 152, which at its forward end straddles the shaft 34 and near its rear end carries a roller 153 which engages in the cam groove of a disk 141, shown by the dotted lines in Fig. 1. This cam groove is so constructed that after the member 126 has been secured in its differential position, the pitman 152 is given a rearward movement whereby through the bell crank and the link 148 the roller 147 is. lowered in the elongated slot 128. When the roller is lowered it engages with one of the inner walls of the pear shaped slot 146*, and brings the lower end of this slot an'djthe lower end a of the elongated slot 128 into coincidence. This operation of the machine just described imparts to the actuating segment 142 the diiferentialsetting given to the segment 126.' Toward the end of the operation of the machine the arms 125 are lowered and thereby the pawls 132 dropout of engagement with the notches in the segment 126. Then when the plate 52 returns to its normal position the segment 126 is also restored to its normal position, and the race shown by dotted lines on the disk 141 returns the pin 147 to its normal position. The actuating member for the indicator also carries a rearwardly extending arm 156. A link 157 connects the arm 156 to an arm 158 rigidly secured toa sleeve surrounding a shaft 159. To this same sleeve type. carriers, (not' shown), can be-conn'ected. Each of these actuating racks is jsecured to its corresponding type carrier by themeans just described.

The operationlof the machine described may be briefly recapitulated. 'When one of the four upper amount keys in each bank is depressed the irregularly shaped member 37, with which the roller 16 on the key depressed engages, is given an extent of movement corresponding to the value of the amount key. The crank handle, which is not shown in the drawings but may be geared to the shaft 34 in the usual manneris'turned and the main drive shaft 34 rotated The operation of the cam 68 then closes the jaws 55 and 58 and the cam 73, because of its construction, then ro'cks these jaws about their pivotal center 59. The upper end of theirregularly shaped member 37 has an idle movement before the plate 52 is raised because of the slot 42 in the end of the link 39. The plate 52, and therefore the rack 75 which it carries, are given as many units of movement as correspond to the value of the key depressed. When one of the lower keys is depressed the roller 53 on the irregularly shaped member 38 is gripped by the jaws 55 and 58 and as this member is pivoted to the arm 46 secured to the plate 52, by the link 49, there is no idle movement and the plate 52 is given a movement corresponding to the value of the amount key depressed.

Then this plate 52 has been differentially jaws 55 and 58 are then oscillated in the opposite direction whereby the differentially positioned member 52 is restored to normal positionand thereby the amount of the transaction registered is added on the totalizer. If-a transfer is to be accomplished during the operation of the machine, the actuating rack is given an extra unit of movement by the spring which surrounds the rod 107, this movement being made possible by the disengagement of the projection 102 on the one arm of the bell crank 99, from the recess 103in the projection on the rack 75, as has been fully described. This rack is restored toits normal position at the end of theoperation of the machine by the engagement of the projection 117 on the arm of the bell crank 116 withthe projection 118 on the rack 75. When the plate 52 is raised the engagement of the pin 131 in the curved recessl30 of thearm 129 differentially positions the segment 126. The alining pawl 132 is then rocked into engagement with one of the notches 127 in the segment. Now whenthe link 148 is lowered, the roller 147 on its upper end engages with the inner face of the pear shaped slot 146 of the actuating member for the indicator and imparts the differential setting of the member 126 to the indicator 144 by the engagementof the-segment rack 142 with the pinion 143, which is rigidly secured to the indicator 144. The

arm"31 is finallyj rocked about its pivotal center 29. and the engagement-with one of the beveled faces er the projection 3O on the detent releases thekey depressed, whereby the detent is restored to its, normal position by, either of the pawls 20 or 19 according'to the direction of movement of the detents.

While the form of mechanism herein shown and described is admirably adapted tofulfil the objects primarily stated, it is to be understood that it is not intended to confine the invention to the one form of embodiment herein shown and described as it is susceptible of embodiment in various forms, all coming within the scope of the claims which follow.

What is claimed is- .1. In a machine of the class described the combination with a bank of keys; of a looking plate for said keys, constructed to be moved in one direction upon the operation of certain keys in the bank and in the opposite direction upon the operation of certain other keys in the bank; a release key in said. bank; and a projection on said locking plate whereby said release key by its engagement with said projection releases the key depressed 2. In a machine of the class described the combination with a bank of keys; of a locking member for said keys constructed to be moved in either direction dependent upon the key operated and having a projection with two beveled faces and a release key ad ap ted to engage either of saidbeveled are f. s i rr iest s when the. k qperated, whereby the. locking'plate given an additional'extent of movement thereby releasing the key depressed.

3. Ina machine. of the class described, the combination with a bank of keys; of a locking member therefor, constructed to be moved in either direction dependent upon the keydepressed; a projection on said member having two beveled faces; a cam arm and operatingfmeans for actuating the cam arm whereby the arm engages either face, of the said; projection and moves the locking member an additional step in the direction in' which it hasalready been moved thereby releasing the key depressed.

4. Inja'machine-ofthe class described, thev combination with-a bank of keys; of a. slidable locking member therefor moved in either direction dependent on the key depressed, and having upper and lower projections each with two inclinedfa'ces; a manipulative device positioned to engage either face of said upper projection and give said locking member .a'furthe'r movement in the direction in which it, has been moved thereby restoring thje'key depressed; a movable member-positioned to engage eitherface of said lower projection and thereby give -sai dlock-. ing. ,member a further movement the di motion in which it] has been moved thereby releasing the key depressed; and a main opcrating device havin connections to actuate saidmovable mem er.

5. -In amachine of the class described, the combination with a bank of keys;- of pivoted members differentially positioned thereby; a totalizer; an actuating member therefor; a slidably mounted plate carrying said actuating member; connections between the pivoted members and the plate; a jaw having a fixed pivotal center; a second jaw pivoted on said first jaw; operating means for the second jaw, whereby the aws are closed and the pivoted member, which has been difierentially positioned, is engaged; and operative means for the first jaw, whereby the same is rookedabout its pivotal center, thereby differentially positioning the plate.

6. In a' machine of the class described, the

combination with a totalizer; of an actuating i. ting of the element is'imparted to the plate;

tially positioned; of a bank of keys; two members differentially positioned by the keys; connections intermediate these two members,-and these two members and the 5 element; and operative devices for moving either of the members differentially positioned whereby the differential setting of such member is imparted to the element.

" 8. In a machine of the class described, the

combination with an element to be differentially positioned; of two members having pivotal centers; connections intermediate said element and said members; manipulative means for differentially positioning said members about their pivotal centers; and operative means for giving either member so positioned a variable movement in the direction of its length whereby the difi'erential setting of said member is imparted to said element.

J 9. In a machine of the class described, the combination with a bank of keys; of a totalizer; an actuating rack therefor; a plate carrying said rack; a determining element for said plate, constructed to be differentially .-:positioned by the keys of lower value; actuatingi means forsaid determining element; connections'between the plate and .the element whereby the said element is moved a constant distance before the differential setand another determining element differentially positioned by the other keys, said latter element being also moved by said actuating means; and connections between said plate and said second element, whereby the plate is moved during this entire movement of the second element thereby imparting the difierential setting of this element to the plate.

10. In a machine of the class described, the combination with a totalizer; of an actuatingrack therefor; a plate carrying said rack; a bank of keys; a pivoted determining member which is differentially positioned by :the keys and is so constructed that its extent of movement about its pivotal center is inversely proportional to the value repre sented by the key depressed; and operative devices constructed to engage the determining'member in its differentially set position and impart to the same a translatory movement directly proportional to the value represented by thekey depressed, whereby the actuating rack is difierentially positioned.

11. Ina machine of the class described, the combination with an element to be difl'erentially positioned; of a pivoted determining member; manipulative devices whereby said member is given an extent of movement about its pivotal center which is inversely proportional to the value represented by the device operated; operative means whereby said member is given a translatory movement directly proportional to said value; and connections between said member and said element whereby the latter movement of said member is imparted to said element.

12. In a machine of the class described, the combination with an element to be differentially positioned; of a determining member therefor; manipulative devices, whereby said member is given an extent of movement which is inversely proportional to the amount represented by the manipulative device operated; an operating means, whereby said member is positively given a second extent of movement which is directly proportional to said value and then positively returned to the position to which it was adjusted by operation of the manipulative device; and connections between said element and said member whereby said element has imparted to it the second movement of said member.

13. In a machine of the class described, the combination with a totalizer; of an actuating rack therefor; pivoted members for determining the differential movement of the totalizer; a bank of keys whereby said members are moved differentially about their pivotal centers; rollers on said members; an actuating device including two jaws each of which carry notched plates constructed to grip said rollers; operating means for closing and for moving said jaws in their closed condition, whereby the determining members are given translatory movements of variable extent.

14. In an accounting machine, the combination with an element to be differentially positioned; of two determining members therefor; a series of keys for differentially adjusting said members; and a device having an invariable extent of movement at each operation of the machine and adapted to operate the members after they have been differentially adjusted whereby said element is differentially positioned.

15. In a machine of the class described the combination with an element to be dif' ferentially positioned; of two irregularly shaped determining members therefor; a series of keys for difierentially adjusting said members; and operating means for moving the member which has been difi'erentially adjusted to position the element differentially.

16. In a machine of the class described, the combination with an element to be differentially positioned; of two determining members for said element; a bank of keys for difi'erentially adjusting said members; and operating means for moving the mem ber which has been differentially adjusted to position differentially the element.

17. In a machine of the class described, the combination with an element to be differentially positioned; of a determining member therefor; means for differentially positioning said member; and a pair of operating jaws adapted to grip said member in its differentially set position and move the same in a constant direction differentially to position said element and then move the member in the reverse direction to the position to which it was adjusted by said means.

. 18. In a machine of the class described, the combination with an element to be differentially positioned; of two determining members therefor; a series of keys for differentially adjusting either of said members; and operating mechanism for positively moving the member, which has been differentially adjusted, first in a constant direction to position the element and then return the member to the position to which it was adjusted by the operated key.

19. In a machine of the class described the combination with an element to be differentially positioned; of a determining member therefor capable of being given rotary and translatory movements of variable extents; manipulative means for engaging said determining member and giving the same a rotary movement; and operating means for giving said member a reciproeating movement after the same has been given a rotary movement, whereby the said element is differentially positioned.

20. In a machine of the class described the combination with an element to be differentially positioned; of a bank of keys; two determining members for said differential element each being given rotary movements of variable extents by certain of said keys, the extent of movement being dependent on the key depressed; and operating means for giving the moved member a reciprocating movement dependent upon the extent of the rotary movement whereby said element is differentially positioned.

21.. In a machine of the class described the combination with an .element to be differentially positioned; of a determining member for said element; a series of keys adapted toengage the determining members and give the same rotary movements of variable extents; and operating means for giving said member a reciprocating movement dependent upon the extent of the rotary move ment whereby said element is differentially positioned.

22. In a machine of the class described the combination with a bank of keys; of pivoted members differentially positioned thereby; an element to be differentially positioned; connections intermediate said members and said element; a pair of jaws having a fixed pivotal center and adapted to engage the differentially moved pivoted member; and operating means for closing said aws and oscillating the same about their pivotal "center "to engage the differentially moved pivoted member and give thesame a -dif-' ferential translatory movement whereby'the element is differentially positioned.

23. In an accounting machine the combination with an element to be differentially positioned; of two determining members therefor; a series of keys adapted to engage and differentially adjust said members; and a device having an invariable extent of movement at each operation of the. machine and adapted to operate the members after they have been differentially adjusted whereby said element is differentially positioned.

24. In a machine of the class described, the combination with a bank of keys; of a locking member for said keys constructed to be moved in either direction dependent upon the key operated and having a projection with two beveled faces; and means.

adapted to engage either of said beveled faces of said projection for giving the looking platean additionalextent of movement thereby releasing the key depressed.

25. In a machine of the. class described,

member therefor; means for differentiallypositioning said member; andfloperating jaws adapted to grip. said-member in.its

differentially set position; and move the same to differentially position said element.

26. In a machine of the-class described; the combination with a differentiallyposi tioned member; of operating jaws adapted to grip said differentially positioned member and give the same a'variable extent of movement dependent upon its differential position. i

'27. In a machine of the class described the combination with an element to be differentially positioned; of determining means therefor; devices for differentially positioning said determining means; and operating jaws having opposing serrations and adapted to grip said determining means in its differentially set position and move the same to differentially position said element.

28. In a machine of the class described, the combination with a member to be differentially positioned; of a determining element therefor; and pivoted operating jaws adapted to grip said element at varying distances from the pivot of said jaws whereby oscillation of said jaws differentially positions said member.

29. In a machine of the class described the combination with a member to be differentially positioned; of a determining lation of said jaws difl'erentially positions said member.

30. In a machine of the class described, the combination with a member to be differentially positioned; of a plurality of determining elements therefor; and pivoted operating jaws adapted to grip one of said determining members at varying distances from the pivot of said jaws at an operation of the machine whereby oscillation of said jaws differentially positions said member.

31. In a machine of the class described, the combinationwith an element to be differentially positioned; of a determining member therefor; a bank of keys for engaging said member and moving it to an extent inversely proportional to the amount represented by the operated key; operating means whereby said member is given a second extent of movement which is directly proportional to said amount; and connections between said element and said member whereby said element has imparted to it the second movement of said member.

32. In a machine of the class described, the combination with an element to be differentially positioned; of a determining member therefor; manipulative means for adjusting the same; and operating means for positively rocking said member first in a constant direction, after it has been differentially adjusted by the manipulative means, to position difi'erentially said element and then positively return the deter- Copiel of this patent may be obtained for 38. In a machine of the class described,

the combination with an invariably moved driving mechanism, of an actuator having a normal starting point a normally ineifective connection whereby the movement of the driving mechanism may positively drive the actuator differential distances from its normal starting point and then positively return same to said starting point, and manipulative devices for diflferent-ially adjusting said connection to render same effective as a preliminary to an operation.

34:. In a machine of the class described, the combination with an invariably moved driving mechanism, of an actuator having a normal starting point, a normally ineffective connection whereby the invariable movement of the driving mechanism may positively drive the actuator difl'erential distances from its normal starting point and then positively return same to said point, and a series of keys selectively operable to effect differential adjustment of said connection to any one of its various positions as a preliminary to an operation.

In testimony whereof I afiiX my signature in the presence of two witnesses.

HAAKON A. MARTIN.

Witnesses:

R. C. GLAss, CARL Bnosr.

five cents each, by addressing the Commissioner of Patents, Washington, D. G.

invariable 

